When do babies start sleeping through the night?

If you’re sleep-deprived and wondering when your baby will finally give you a full night’s rest, you’re not alone. The short answer: many babies begin sleeping through the night (defined as a 6-8 hour stretch) between 3 and 6 months old. But “through the night” is a moving target, and every baby is unique. Some start as early as 2 months, others not until 12 months or later. What matters most is your baby’s overall growth and development, not a race to a milestone.

Age-by-age sleep guide

Newborn to 2 months: Newborns sleep 14-17 hours a day, but in short bursts of 2-4 hours. They wake frequently to eat because their tiny stomachs empty quickly. At this stage, sleeping through the night isn’t developmentally expected or even safe (they need regular feeds).

2 to 4 months: Some babies start stretching their longest sleep period to 5-6 hours. You might notice a predictable longer stretch at night. However, many still wake once or twice to feed. Around 4 months, a major sleep regression (the “4-month sleep regression”) can disrupt any progress, as baby’s sleep cycles mature. This is normal and temporary.

4 to 6 months: This is the sweet spot when many babies can manage 6-8 hours without a feed. By 6 months, physically healthy babies may not need nighttime feeds. But don’t panic if your 6-month-old still wakes once – many do, especially breastfed babies.

6 to 12 months: Most babies can sleep 10-12 hours at night with one or no wakes. But teething, separation anxiety, and developmental leaps (like crawling) can cause regressions. These phases pass.

12+ months: Toddlers often sleep 11-14 hours total, with one daytime nap. Night waking is still common, but usually brief. If your toddler wakes frequently and seems distressed, consider sleep training or check for medical issues.

Signs your baby is ready to sleep through

Before you expect long sleep, look for these cues:

  • Weight gain: Your pediatrician confirms baby is gaining well and doesn’t need night feeds.
  • Consistent schedule: Baby falls asleep around the same time each night and naps predictably.
  • Longer stretches: Baby naturally sleeps 5+ hours without waking on their own.
  • Self-soothing: Baby can fall back asleep without your help (sucking fingers, rubbing face, etc.).
  • Less interest in night feeds: Baby takes smaller amounts or sleeps through feed time.

If your baby shows these signs but still wakes, they may be ready for gentle sleep training (more on that below).

Tips to encourage longer sleep (safely)

  • Follow safe sleep guidelines: Always place baby on their back on a firm, flat mattress with no loose bedding or soft objects. Room-share for at least 6 months. Never use weighted sleepwear or positioners.
  • Establish a bedtime routine: A 20-30 minute routine (bath, book, lullaby) signals sleep is coming. Keep it calm and consistent.
  • Put baby down drowsy but awake: This helps them learn to fall asleep independently. If they cry, you can soothe without picking up (pat back, shush).
  • Dream feed: If your baby wakes at 10-11pm, offer a quick feed before you go to bed to buy you a few more hours.
  • Consider sleep training around 4-6 months: Methods like Ferber (graduated extinction) or chair method can help. Always check with your pediatrician before starting.
  • Adjust daytime naps: Too much or too little daytime sleep can disrupt nights. Most babies need 3-4 naps at 4 months, 2-3 at 6 months, and 1-2 at 12 months.
  • Watch for sleep regressions: Growth spurts, teething, and milestones can cause temporary setbacks. Stay consistent and patient.

When to talk to your pediatrician

Most sleep issues are normal, but consult your pediatrician if:

  • Your baby is over 6 months and still wakes every 2-3 hours despite healthy weight gain.
  • You suspect a medical issue: reflux, ear infections, sleep apnea (snoring, gasping), or allergies causing discomfort.
  • Your baby has trouble breathing, turns blue, or is unusually lethargic.
  • Your baby seems in pain when lying flat or during feedings.
  • Sleep disruption lasts more than 2-3 weeks unexplained.

Your pediatrician can rule out underlying problems and offer safe solutions tailored to your baby. Remember: every baby is different, and your baby will eventually sleep through the night. You’re doing a great job.

Key Takeaway

Your baby will sleep through the night when they’re ready, typically between 3-6 months, but every child is different – focus on safe sleep habits and consistency, and trust your instincts.